On Tue, 2022-06-21 at 15:24 +0200, Lino Sanfilippo wrote: > From: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> > > The test for interrupts in tpm_tis_send() is skipped if the flag > TPM_CHIP_FLAG_IRQ is not set. Since the current code never sets the flag > initially the test is never executed. > > Fix this by setting the flag in tpm_tis_gen_interrupt() right after > interrupts have been enabled and before the test is executed. > > Signed-off-by: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> > --- > drivers/char/tpm/tpm_tis_core.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c > index 1f7663ac1fc4..650c202d2f50 100644 > --- a/drivers/char/tpm/tpm_tis_core.c > +++ b/drivers/char/tpm/tpm_tis_core.c > @@ -775,11 +775,16 @@ static int tpm_tis_gen_interrupt(struct tpm_chip *chip) > if (ret < 0) > return ret; > > + chip->flags |= TPM_CHIP_FLAG_IRQ; > + > if (chip->flags & TPM_CHIP_FLAG_TPM2) > ret = tpm2_get_tpm_pt(chip, 0x100, &cap2, desc); > else > ret = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc, > 0); > > + if (ret) > + chip->flags &= ~TPM_CHIP_FLAG_IRQ; > + > tpm_tis_release_locality(chip, 0); > > return ret; Tested-by: Michael Niewöhner <linux@xxxxxxxxxxxxxx>
